Final answer:
The best action is to direct the customer to ask a department specialist for assistance.
Step-by-step explanation:
The best action to take in this situation is to direct the customer to ask a department specialist for assistance. This ensures that the customer will receive accurate information and be guided to the correct department with confidence. Offering to guide the customer yourself is also a viable option, but if you are on duty stocking shelves, it is best to prioritize your assigned tasks. Continuing to stock shelves and assuming another associate will help is not the most customer-oriented approach, and informing the customer that you are not responsible for products in other departments is not helpful or professional.